Downhill slide system

A mountain slide system comprising:

• a double-rail track, each rail being of substantially rectangular cross-section with top, bottom, and inside vertical faces each substantially flat, continuous and unobstructed throughout the length of the track, and being mounted well above the ground on supports attached to it along its outside vertical face;
• and
• a cart having front and rear wheel pairs mounted to support it on the track,
• each wheel being of substantially constant diameter throughout its width, such width considerably exceeding the diameter and being at least twice that of the rail on which it runs,
• the wheels of the front pair being held in separate mounts each adapted to pivot about a vertical axis to allow steering the cart relative to the track,
• a guide member for each supporting wheel mounted on the cart in position to bear on the vertical inside face of the corresponding rail to restrain the wheel from sliding laterally outward off the rail, said guide members for each pair of wheels being spaced apart a distance sufficiently less than the gauge of the track to afford substantial steering clearance, the guide members of the front wheels being rubbing blocks and of the rear wheels being smaller wheels with vertical axles,
• a pair of brakes operable by the rider, each including a pad movably mounted below a rear supporting wheel in position to bear on the bottom face of the corresponding rail when actuated or when the rear of the cart tends to jump vertically off the rail,
• the cart also having mounted thereon front and rear pairs of ground handling wheels for rolling the cart when off the rails, the front pair of such handling wheels also serving as retaining wheels to restrain the supporting wheels from lifting substantially above the rails, one such front handling wheel being mounted below each front supporting wheel in position to bear on the bottom of the corresponding rail, and
• steering means operable by the rider of the cart to control the pivoting of the steerable wheels.